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Finding the Fourth Proportional to 99,203.32, 136,849.26 and 61,411.96

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Solution

The fourth proportional to 99,203.32, 136,849.26 and 61,411.96 is: 84,716.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,203.32 : 136,849.26 = 61,411.96 : x
  2. Step 2: Convert to fraction form
    99,203.32/136,849.26 = 61,411.96/x
  3. Step 3: Cross multiply
    99,203.32x = 136,849.26 × 61,411.96
  4. Step 4: Simplify right side
    99,203.32x = 8,404,181,281.15
  5. Step 5: Solve for x
    x = 8,404,181,281.15/99,203.32
  6. Step 6: Final answer
    x = 84,716.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.